CN102541239A - Network equipment and power consumption control method thereof - Google Patents

Abstract

The present invention provides a network device and its power consumption control method. The network device includes a plurality of power supply units, a central processing unit, and a baseboard management controller. The plurality of power supply units provide power for the central processing unit, and each power supply unit The unit has a rated power, and the baseboard management controller is used to detect whether the multiple power supply units are working normally. When it is detected that one or more power supply units cannot supply power normally, the baseboard management controller will respond accordingly The power consumption of the central processing unit is adjusted so that the power consumption of the central processing unit is equal to the total power provided by the remaining normally powered power supply units.

Description

Network equipment and its power consumption control method

technical field

The invention relates to a network device and a power consumption control method thereof, in particular to a network device capable of automatically controlling power consumption and a power consumption control method thereof.

Background technique

With the growth of data traffic and the improvement of service quality requirements, high reliability has become one of the most important indicators of high-performance communication networks. In order to achieve higher reliability, existing network devices such as network switches and servers are generally provided with multiple power supply units (power supply units, PSUs). When one or a part of PSUs fails, the remaining PSUs with normal performance can still maintain the power supply of the network equipment.

However, at this time, the number of PSUs normally supplying power is reduced, and the total power provided is also reduced accordingly. If the power consumption of the network equipment exceeds the total power upper limit of the remaining normal PSUs, the network equipment may shut down abnormally or cause other failures due to insufficient power output, which will affect the normal operation of the entire network.

Contents of the invention

In view of this, it is necessary to provide a network device that automatically controls power consumption.

In addition, it is necessary to provide a method for controlling power consumption of the network device.

A network device, including a plurality of power supply units and a central processing unit, the plurality of power supply units provide power for the central processing unit, each power supply unit has a rated power, the network device includes a baseboard management controller, the baseboard The management controller is used to detect whether the plurality of power supply units are working normally, and when it is detected that one or more power supply units cannot supply power normally, the baseboard management controller will adjust the power consumption of the central processing unit accordingly , so that the power consumption of the central processing unit is equal to the total power provided by the remaining normal power supply units.

A method for controlling power consumption of the above-mentioned network equipment, the method comprising the following steps: a. The baseboard management controller continuously detects and judges whether one or more power supply units fail; b. If any power supply unit fails, Then the baseboard management controller controls the central processing unit to work with the minimum power consumption; c. the baseboard management controller obtains the current power consumption of the central processing unit, and judges whether the current power consumption is equal to the remaining normal power supply The total power provided by the supply unit; d. If the current power consumption is not equal to the total power provided by the remaining power supply units in normal working condition, then the baseboard management controller adjusts the frequency of the central processing unit so that the central processing unit The power consumption is equal to the total power provided by the remaining normally powered power supply units.

The above-mentioned network equipment can automatically adjust the power consumption of the central processing unit according to the working status of multiple power supply units, and when one or more power supply units fail, the power consumption of the central processing unit can be adjusted to make it equal to the remaining The total power provided by the normally powered power supply unit. In this way, the network equipment can be effectively protected, the network can be prevented from being overloaded, and at the same time, the power provided by the power supply unit can be utilized to the greatest extent.

Description of drawings

Fig. 1 is a functional block diagram of a network device in a preferred embodiment of the present invention.

Fig. 2 is a flowchart of a method for controlling power consumption of a network device in a preferred embodiment of the present invention.

Description of main component symbols

Internet equipment 100 PSU 11 CPU 12 North bridge chip 13 BMC 14 South Bridge chip 15 PDB 16 ME 131

Detailed ways

Referring to Fig. 1, a preferred embodiment of the present invention provides a network device 100, which can be a server, a network switch, etc., and includes a plurality of power supply units (power supply unit, PSU) 11, a central processing unit (central processing unit) processing unit (CPU) 12, north bridge chip 13, baseboard management controller (baseboard management controller, BMC) 14, south bridge chip 15 and power development board (power development board, PDB) 16. The CPU 12 , north bridge chip 13 , south bridge chip 15 , BMC 14 and PDB 16 are electrically connected in sequence.

The multiple PSUs 11 are all connected to the PDB 16 for supplying power to various components (such as the CPU 12 ) in the network device 100 , and each PSU 11 has a rated power Pmax respectively.

The CPU 12 is used to control multiple components such as heat sinks and relays installed in the network device 100 to work normally. The CPU 12 has multiple operating frequencies, and each operating frequency is related to the power supply status of the PSU 11 . For example, when a plurality of PSUs 11 are normally powered, the CPU 12 can work at a maximum frequency Fmax, that is, the CPU 12 operates at its maximum, and the power consumption of the CPU 12 at this time is the total power provided by the plurality of PSUs 11 . And when wherein one or more PSU11 broke down, the CPU12 then worked at a preset minimum frequency Fmin, then gradually increased under the control of the BMC14 until the power consumption of the CPU12 reached the remaining normal power supply. up to the total power provided by PSU11. Specifically, in the preferred embodiment of the present invention, taking the network device 100 with two PSUs 11 as an example, the working status of the CPU 12 is described. Firstly, assuming that the rated power of each PSU 11 is 1000 watts, then when the two PSUs 11 work normally, the total power provided by the two PSUs 11 is 2000 watts. In this way, the CPU 12 can work at a frequency corresponding to a power of 2000 watts. And when one of the PSU11 breaks down, then the CPU12 first works at a preset minimum frequency, so that the power consumption of the CPU12 drops to the minimum (such as 200 watts), and then the frequency of the CPU12 is gradually increased until the CPU12 The power consumption reaches the rated power provided by the remaining PSU11 (eg, 1000 watts). In this way, the network device 100 can be effectively protected to prevent the network device 100 from overloading, and at the same time, the power consumption provided by the PSU 11 can be utilized to the maximum.

The CPU12 also has a plurality of frequency state (P-State) indicators corresponding to the operating frequency. The P-State performance indicators can usually be defined as P0, P1...P7 eight states, and when the P-State value is larger , the lower the operating frequency of the CPU 12 is. Conversely, when the value of P-State is smaller, the operating frequency of the CPU 12 is higher. In this way, by setting the P-State performance index of the CPU 12 , the CPU 12 can work at a corresponding working frequency. For example, when the P-State value is set to P0, the CPU 12 can be operated at the maximum frequency and reach the maximum power consumption, that is, the full-speed mode. When the P-State value is set to P7, the CPU 12 works at the lowest frequency and has the lowest power consumption, and so on. The P-State value can also be defined as states other than the above 8 states, but usually no more than 16 performance state numbers, that is, the P-State performance index under normal conditions can be defined as P0, P1.... ..P15 and other 16 kinds.

The north bridge chip 13 includes a management unit (managements engine, ME) 131, and the ME131 is used to adjust the P-State performance index of the CPU 12, so that the CPU 12 works at a corresponding operating frequency and has a corresponding power consumption.

The BMC14 is used to detect whether the plurality of PSU11s are working normally. When it detects that one or more PSU11 fails and cannot supply power normally, it will send corresponding control instructions to the ME131, so that the ME131 realizes the CPU12 adjustment, and then control the normal operation of the CPU12. Because the BMC 14 cannot be directly connected to the ME 131 , the BMC 14 is generally connected to the south bridge chip 15 first, and then connected to the north bridge chip 13 through the south bridge chip 15 . In a preferred embodiment of the present invention, the BMC 14 is connected to the south bridge chip 15 through the SMLink bus, and the south bridge chip 15 is connected to the north bridge chip 13 through the Clink bus.

The PDB16 can be connected to the multiple PSU11 and the BMC14 respectively through the power management bus PMBus, so that the BMC14 can communicate with the multiple PSU11 respectively through the PDB16, for example, to detect whether the multiple PSU11 are working normally. The PDB 16 is also used to process the voltages provided by the multiple PSUs 11 , and output the processed voltages to each unit of the network device 100 . For example, if the normal operating voltage of the CPU 12 in the network device 100 is 5V, and there are two PSU11 in the preferred embodiment of the present invention, and the upper limit of the voltage that each PSU11 can provide is 3V, then the PDB16 can control the output voltage of the two PSU11 Adjust it so that it outputs a required 5V voltage to the CPU12.

Please refer to FIG. 2 together. The power consumption control method of the network device in the preferred embodiment of the present invention specifically includes the following steps:

Step S1: The BMC 14 continuously detects and judges whether one or more PSUs 11 among the plurality of PSUs 11 are faulty through the PDB 16 . If yes, execute step S2, if not, execute step S3.

Step S2: Since the BMC 14 detects that one or more PSUs 11 have failed, the BMC 14 will send a corresponding control command to the ME 131 in the north bridge chip 13 through the south bridge chip 15 . After receiving the control instruction, the ME131 adjusts the P-State performance index of the CPU12 to make the P-State value equal to P7 or P15, that is, to make the CPU12 work with the minimum power consumption (for example, 200 watts). And execute step S4.

Step S3: Because the multiple PSUs 11 are working normally, the BMC 14 sends a corresponding control command to the ME 131 in the north bridge chip 13 through the south bridge chip 15 . After the ME131 receives the control instruction, it adjusts the P-State performance index of the CPU12, so that the P-State value is equal to P0, that is, the CPU12 is operated with the maximum power consumption, and the maximum power consumption is equal to that of multiple PSU11 under normal operation. The sum of the rated power Pmax. At the same time, return to step S1 to continue to detect whether there is a PSU11 failure.

Step S4: The BMC14 obtains the current power consumption Pcur of the CPU12, and judges whether the current power consumption Pcur is equal to the total power provided by the remaining PSU11 normally powered, that is, the sum of the rated power Pmax of each normally powered PSU11. If yes, go back to step S1, if not, go to step S5.

Step S5: Because the current power consumption Pcur of the CPU 12 is not equal to the sum of the rated power Pmax provided by the remaining normal power supply PSU 11, the BMC 14 sends a corresponding control command to the ME 131 in the north bridge chip 13 through the south bridge chip 15. After the ME131 receives the control command, it adjusts the P-State performance index of the CPU12 accordingly, thereby adjusting the power consumption of the CPU12 to make it equal to the total power provided by the remaining normal power supply PSU11, thereby effectively protecting the network device 100, Prevent the network device 100 from being overloaded while maximizing the use of the power provided by the PSU 11 .

Apparently, the network device 100 of the present invention can automatically adjust the power consumption of the CPU 12 according to the working status of multiple PSUs 11, and when one or more of the PSUs 11 fails, the power of the CPU 12 can be adjusted to make it equal to the remaining The total power provided by the normally powered PSU11. In this way, the network device 100 can be effectively protected to prevent the network device 100 from overloading, and at the same time, the power provided by the PSU 11 can be utilized to the maximum.

Claims (11)

1. network equipment; Comprise a plurality of power-supply units, central processing unit; These a plurality of power-supply units are that central processing unit provides power supply, and each power-supply unit has a rated power, it is characterized in that: this network equipment comprises baseboard management controller; Whether all this baseboard management controller is used to detect said a plurality of power-supply unit operate as normal; One or more power-supply units are wherein arranged can't normal power supply the time when detecting, said baseboard management controller is the power consumption of corresponding this central processing unit of adjusting, the general power that the power-supply unit that makes the power consumption of this central processing unit equal remaining normal power supply provides.

2. the network equipment as claimed in claim 1; It is characterized in that: this network equipment comprises north bridge chips; Said north bridge chips comprises administrative unit, this central processing unit comprise a plurality of frequency of operation and with said a plurality of frequency of operation correspondent frequency states (P-State) performance index, this administrative unit is used under the control of baseboard management controller the P-State performance index to central processing unit and regulates; Make this central processing unit be operated in the corresponding work frequency, and have corresponding power consumption.

3. the network equipment as claimed in claim 2 is characterized in that: this network equipment comprises South Bridge chip, and said baseboard management controller is connected to said administrative unit through South Bridge chip, and then controls this administrative unit.

4. the network equipment as claimed in claim 3 is characterized in that: this baseboard management controller is connected to South Bridge chip through the SMLink bus, and this South Bridge chip is connected to north bridge chips through the Clink bus.

5. the network equipment as claimed in claim 1; It is characterized in that: this network equipment comprises power panel; Said a plurality of power-supply unit all is connected to power panel; Said power panel is connected to this baseboard management controller, makes this baseboard management controller communicate through power panel and said a plurality of power-supply unit.

6. the network equipment as claimed in claim 5 is characterized in that: this power panel is to connect this a plurality of power-supply units and baseboard management controller respectively through power management bus (PMBus).

7. the network equipment as claimed in claim 5 is characterized in that: this power panel also is used for the voltage that these a plurality of power-supply units provide is handled, and the voltage after will handling is exported to each unit of the said network equipment.

8. power consumption control method like each described network equipment in the claim 1-7 item, it is characterized in that: this method may further comprise the steps:

A. this baseboard management controller constantly detects and has judged whether that one or more power-supply units break down;

B. if there is power-supply unit to break down, then this this central processing unit of baseboard management controller control carries out work with the power consumption of minimum;

C. this baseboard management controller obtains the current power consumption of this central processing unit, and judges the general power that power-supply unit that whether this current power consumption equals remaining normal power supply provides;

D. if current power consumption is not equal to the general power that the remaining power-supply unit that is in normal operating conditions provides; Then this baseboard management controller is regulated the frequency of this central processing unit, the general power that the power-supply unit that makes the power consumption of this central processing unit equal remaining normal power supply provides.

9. the power consumption control method of the network equipment as claimed in claim 8; It is characterized in that: in step b; When judging the equal operate as normal of a plurality of power-supply units, this baseboard management controller control central processing unit carries out work with the power consumption of maximum, returns step a simultaneously.

10. the power consumption control method of the network equipment as claimed in claim 9, it is characterized in that: this maximum power dissipation equals the general power that said a plurality of power-supply unit provides.

11. the power consumption control method of the network equipment as claimed in claim 8 is characterized in that: in steps d,, then return step a if the current power consumption of the said central processing unit of judgement equals the general power that the power-supply unit of remaining normal power supply provides.

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